Waterproof Sealant Mastic, 2025 Upgrade Waterproof Repair Sealing Clay, Cement Crack Filler,Quick Mending Mud for Drain Connection, Wall Hole, Air Conditioning Hole (3)

Customers find the sealant works well, with one mentioning it molds easily and another noting it's good for filling gaps in drywall. The product receives positive feedback for its quality, ease of use, and value for money.